1 ABOUT LEAD FREE SOLDER (PbF: Pb free) 4
1.1. Suggested PbF Solder
4
2 FOR SERVICE TECHNICIANS
5
3 CAUTION
5
4 OPERATING INSTRUCTIONS
6
4.1. To Use the Unit in the Event of a Power Failure
6
4.2. Battery
6
4.3. Location of Controls
9
4.4. Connections
10
4.5. Guide to Settings
11
4.6. Registering a Handset to a Base Unit
13
4.7. Copying Phonebook Entries
14
4.8. For Service Hint
14
5 DISASSEMBLY INSTRUCTIONS
15
5.1. Base Unit
15
5.2. Handset
16
5.3. Charger Unit
17
6 HOW TO REPLACE THE HANDSET LCD
18
7 TROUBLESHOOTING FLOWCHART
19
7.1. Check Power
20
7.2. Check Battery Charge
21
7.3. Check Link
22
7.4. Check Handset Transmission
26
7.5. Check Handset Reception
26
7.6. Check Caller ID
26
7.7. Check Base Speakerphone Transmission
26
7.8. Check Base Speakerphone Reception
26
7.9. Bell Reception
27
7.10. Check TAM Operation
27
8 TROUBLESHOOTING BY SYMPTOM (BASE UNIT AND
CHARGER UNIT)
28
8.1. Check Point (Base Unit)
28
8.2. The Setting Method of JIG (Base Unit)
33
8.3. Adjustment Standard (Base Unit)
35
8.4. Check Point (Charger Unit)
36
8.5. Adjustment Standard (Charger Unit)
36
9 TROUBLESHOOTING BY SYMPTOM (HANDSET)
37
9.1. Check Point (Handset)
37
9.2. Troubleshooting for Speakerphone (Handset)
40
9.3. The Setting Method of JIG (Handset)
41
9.4. Adjustment Standard (Handset)
43
10 THINGS TO DO AFTER REPLACING IC
44
10.1. Base Unit
44
10.2. Handset
44
11 RF SPECIFICATION
45
11.1. Base Unit
45
11.2. Handset
45
12 HOW TO CHECK THE SPEAKER OR RECEIVER
46
13 FREQUENCY TABLE (MHz)
46
14 BLOCK DIAGRAM (BASE UNIT)
47
15 CIRCUIT OPERATION (BASE UNIT)
48
15.1. Outline
48
15.2. Power Supply Circuit
49
15.3. Telephone Line Interface
50
15.4. Transmitter/Receiver
50
15.5. Pulse Dialling
50
16 BLOCK DIAGRAM (HANDSET)
51
17 CIRCUIT OPERATION (HANDSET)
52
17.1. Outline
52
17.2. Power Supply Circuit/Reset Circuit
52
17.3. Charge Circuit
52
17.4. Battery Low/Power Down Detector
52
17.5. Speakerphone
52
18 CIRCUIT OPERATION (CHARGER UNIT)
53
18.1. Power Supply Circuit
53
19 SIGNAL ROUTE
54
20 CPU DATA (BASE UNIT)
56
20.1. IC4 (BBIC)
56
21 CPU DATA (HANDSET)
59
21.1. IC1 (BBIC)
59
22 ENGINEERING MODE
61
22.1. Base Unit
61
22.2. Handset
64
22.3. Copying Phonebook Items when Repairing
67
Note:
Because section 4 of this manual is an extract from the operating instructions for this model, it is subject to change without notice.
You can download and refer to the original operating instructions on TSN Server for further information.
CONTENTS
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2
KX-TG1283BXS / KX-TG1283BXT / KX-TCA122CXS / KX-TCA122CXT / KX-TCA121CXS / KX-TCA121CXT
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